How to support Feathercoin?

[cqtenq]

Feathercoin Core 0.9.3 wallet have support OP_RETURN , I think FTC and BTC are the same. How to support Feathercoin?
I change RPC port 8332 to 9337, blockstore start OK and blockstore-cli Error.

blockstore-cli preorder swiftonsecurity N876Ywf8bL5JWMPbHvjHP2AaSF1Ap8Wg4qAn9AAiQbmYFWPh2vqe
{
"error": "UnboundLocalError: local variable 'secret_exponent' referenced before assignment",
"traceback": [
"Traceback (most recent call last):",
" File "/usr/local/lib/python2.7/dist-packages/blockstore/blockstored.py", line 253, in jsonrpc_preorder",
" blockchain_client=blockchain_client, testset=True)",
" File "/usr/local/lib/python2.7/dist-packages/blockstore/lib/operations/preorder.py", line 28, in broadcast",
" hash160 = BitcoinPrivateKey(private_key).public_key().hash160()",
" File "/usr/local/lib/python2.7/dist-packages/coinkit/privatekey.py", line 61, in init",
" if not is_secret_exponent(secret_exponent, self._curve.order):",
"UnboundLocalError: local variable 'secret_exponent' referenced before assignment"
]
}

[muneeb-ali]

You're right that given that FTC has support for OP_RETURN, it's possible to support Blockstore on top of FTC. However, keep in mind that the "virtual blockchain" (see this) on FTC will not be the same as the "virtual blockchain" on BTC (unless everyone is broadcasting the exact same name_ops on the FTC blockchain as well). You can think of this as creating a parallel universe (or a parallel chat channel) that no one is really using because we expect most people to use the BTC blockchain for now.

Are you trying to create new namespace(s) on top of FTC using Blockstore?

On a separate note, it's probably a good idea to start embedding the Merkle tree root hash of the blockstore namespace in other alt-coin blockchains periodically, but this is different from broadcasting all name_ops on an alt-coin.

[jcnelson]

Hi @cqtenq,

The problem you were encountering was due to a now-fixed bug in pybitcoin, whereby pybitcoin did not properly handle compressed WIF-encoded keys. Creating a private key as follows works for me:

>>> import pybitcoin
>>> pybitcoin.BitcoinPrivateKey("N876Ywf8bL5JWMPbHvjHP2AaSF1Ap8Wg4qAn9AAiQbmYFWPh2vqe")
<pybitcoin.privatekey.BitcoinPrivateKey instance at 0x7fc3e8f5de60>
>>> 

I'm closing this issue for lack of activity. Please re-open if you encounter this problem again.

-Jude